The Non-nuclear aggression agreement is a bilateral and nuclear weapons control treaty between the two South Asian states, India and Pakistan, on the reduction (or limitation) of nuclear arms and pledged not to attack or assist foreign powers to attack on each's nuclear installations and facilities. The treaty was drafted in 1988, and signed by the Prime Minister Benazir Bhutto and her Indian counterpart, Rajiv Gandhi on 21 December 1988; it entered into force in January 1991.